CN202718859U - High-sealability electric plunger fuel pump - Google Patents
High-sealability electric plunger fuel pump Download PDFInfo
- Publication number
- CN202718859U CN202718859U CN 201220428672 CN201220428672U CN202718859U CN 202718859 U CN202718859 U CN 202718859U CN 201220428672 CN201220428672 CN 201220428672 CN 201220428672 U CN201220428672 U CN 201220428672U CN 202718859 U CN202718859 U CN 202718859U
- Authority
- CN
- China
- Prior art keywords
- plunger
- valve
- fuel pump
- shell
- sealability
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a high-sealability electric plunger fuel pump which comprises a plunger valve component, a coil component, a left shell and a right shell. The left shell and the right shell are fixedly connected to form an inner space which can contain the plunger valve component and the coil component. The high-sealability electric plunger fuel pump is characterized in that the plunger valve component comprises a plunger barrel, a plunger, an oil inlet valve and a valve plate, the plunger is movably arranged inside the plunger barrel, the left end of the plunger is provided with a cavity which enables the valve plate to axially move inside, the oil inlet valve is arranged on the right end port of the plunger barrel, a spring is arranged between the oil inlet valve and the plunger, the left end port of the plunger barrel abuts against a shock pad, the right end port of the plunger barrel abuts against a valve seat of the oil inlet valve, and the shock pad, the plunger drum and the valve seat of the oil inlet valve are axially pressed and fixed by the left shell and right shell. An O-shaped ring is arranged between the right end port of the plunger drum and the valve seat of the oil inlet valve to seal. Compared with a traditional electric plunger fuel pump, the high-sealability electric plunger fuel pump has the advantages of being good in sealability, small in vibration and simple in structure.
Description
Technical field
The utility model relates to a kind of electric plunger fuel pump of in the automobile oil supply system, using.
Background technique
The effect of electric plunger fuel pump is to be stored in fuel delivery in the fuel tank to the fuel pipe of oil sprayer, supplies with the fuel oil of oil sprayer certain pressure, and oil sprayer drives motor car engine and carries out work according to the instruction oil spout of ECU.The electric plunger fuel pump of traditional type, has following structure: comprise plunger valve assembly, coil block, left shell and right shell body, left and right housing is fixedly connected to form the inner space that holds plunger valve assembly and coil block, coil block is located at the cylindrical of plunger valve assembly, coil block comprises coil carrier and left-and-right guard board, left-and-right guard board is pressed abd fixed on the left and right side of coil carrier by left and right sides housing, the surface of contact of the surface of contact of left backplate and left shell, right backplate and right shell body is respectively equipped with seal ring and seals.In the said structure, the sealing of fuel pump just realizes by the seal ring between left backplate and left shell, right backplate and the right shell body, owing to only having unique together sealing, so the sealability of traditional type electric plunger fuel pump is not ideal enough, also there is complex structure in the traditional type electric plunger fuel pump, vibrates large shortcoming owing to the structural design reason in addition.
Summary of the invention
In view of the deficiencies in the prior art, the utility model provides a kind of good seal performance, vibrates high sealing performance electric plunger fuel pump little, simple in structure.
For solving the problems of the technologies described above, the utility model takes following technological scheme to finish:
A kind of high sealing performance electric plunger fuel pump, comprise the plunger valve assembly, coil block, left shell and right shell body, left, right shell body is fixedly connected to form the inner space that holds plunger valve assembly and coil block, coil block is located at the cylindrical of plunger valve assembly, coil block comprises coil carrier and left-and-right guard board, left-and-right guard board is pressed abd fixed on the left and right side of coil carrier by left and right sides housing, the surface of contact of left backplate and left shell, the surface of contact of right backplate and right shell body is respectively equipped with seal ring and seals, it is characterized in that: the plunger valve assembly comprises plunger tube, plunger, oiling valve and valve block, plunger is movable the setting in plunger tube, the plunger left end is provided with cavity makes described valve block axially movable inside, oiling valve is located at the right output port of plunger tube, be provided with spring between oiling valve and the plunger, the left port of plunger tube leans on beam, right output port leans on the valve seat of oiling valve, beam, between plunger tube and the oiling valve valve seat three by left and right sides housing shaft to being fixed, be provided with O type circle sealing between the right output port of plunger tube and the valve seat of oiling valve.
In the said structure, not only have backplate and the housing seal of traditional fuel pump, also increased the beam sealing of plunger tube left port and the O type circle sealing of plunger tube right output port, thereby greatly improved the sealability of the utility model fuel pump.Owing to the setting of beam, plunger tube is axially fixed after installation in addition, so vibration was little when the utility model was worked, also makes the project organization of whole fuel pump become simple simultaneously.
Oil intake nozzle and the right shell body of fuel pump are welded to connect, and oil outlet and left shell are welded to connect.Above-mentioned design has solved the Leakage that traditional type electric plunger fuel pump oil intake nozzle and right shell body, oil outlet are threaded with left shell.
Description of drawings
The utility model has following accompanying drawing:
Fig. 1 is structural representation of the present utility model.
Embodiment
Accompanying drawing has represented the technical solution of the utility model and embodiment, and the below further describes each details and the working principle thereof of embodiment more by reference to the accompanying drawings.
As shown in the figure, high sealing performance electric plunger fuel pump of the present utility model, comprise the plunger valve assembly, coil block 7, left shell 19 and right shell body 13, left, right shell body is fixedly connected to form the inner space that holds plunger valve assembly and coil block by screw 16, the plunger valve assembly comprises plunger tube 4, plunger 5, oiling valve 12 and valve block 3, plunger 5 is plunger tube 4 interior movable settings, plunger 5 left ends are provided with cavity 1 makes described valve block 3 axially movable inside, for prevent that valve block 3 from dropping out from cavity 1, the port of cavity 1 is provided with baffle ring 2, oiling valve 12 is located at the right output port of plunger tube 4, be provided with spring 8 between oiling valve 12 and the plunger 5, the left port of plunger tube 4 leans on beam 20, right output port leans on the valve seat 10 of oiling valve, beam 20, between plunger tube 4 and oiling valve valve seat 10 threes by left and right sides housing shaft to being fixed, be provided with 9 sealings of O type circle between the right output port of plunger tube 4 and the valve seat of oiling valve 10, coil block 7 is located at the cylindrical of plunger valve assembly, coil block comprises coil carrier 6 and left-and-right guard board 18,14, left-and-right guard board is pressed abd fixed on the left and right side of coil carrier 6 by left and right sides housing, the surface of contact of left backplate 18 and left shell 19 is provided with seal ring 17 and seals, and the surface of contact of right backplate 14 and right shell body 13 is provided with seal ring 15 and seals; Oil intake nozzle 11 and the right shell body 13 of fuel pump are welded to connect, and oil outlet 21 is welded to connect with left shell 19.
The utility model is like this work: coil block 7 energisings, promoting plunger 5 Compress Springs 8 moves right, valve block 3 is opened, fuel oil in plunger tube 4 the right sealed volumes enters left side cavity volume, subsequently, coil block 7 dead electricity, plunger 5 under spring-force driven dual to left movement, plunger 5 pumps the fuel oil in plunger tube 4 left side cavity volumes, and this moment, valve block 3 was closed, and oiling valve 12 is opened, again oil-feed in plunger tube 4 the right sealed volumes, along with the continuous energising dead electricity of coil block 7, plunger 5 is finished continuous pump oil and oil-feed work in plunger tube 4 interior to-and-fro motion.
Claims (2)
1. high sealing performance electric plunger fuel pump, comprise the plunger valve assembly, coil block, left shell and right shell body, left, right shell body is fixedly connected to form the inner space that holds plunger valve assembly and coil block, coil block is located at the cylindrical of plunger valve assembly, coil block comprises coil carrier and left-and-right guard board, left-and-right guard board is pressed abd fixed on the left and right side of coil carrier by left and right sides housing, the surface of contact of left backplate and left shell, the surface of contact of right backplate and right shell body is respectively equipped with seal ring and seals, it is characterized in that: the plunger valve assembly comprises plunger tube, plunger, oiling valve and valve block, plunger is movable the setting in plunger tube, the plunger left end is provided with cavity makes described valve block axially movable inside, oiling valve is located at the right output port of plunger tube, be provided with spring between oiling valve and the plunger, the left port of plunger tube leans on beam, right output port leans on the valve seat of oiling valve, beam, between plunger tube and the oiling valve valve seat three by left and right sides housing shaft to being fixed, be provided with O type circle sealing between the right output port of plunger tube and the valve seat of oiling valve.
2. a kind of high sealing performance electric plunger fuel pump as claimed in claim 1, it is characterized in that: oil intake nozzle and the right shell body of fuel pump are welded to connect, and oil outlet and left shell are welded to connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220428672 CN202718859U (en) | 2012-08-28 | 2012-08-28 | High-sealability electric plunger fuel pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220428672 CN202718859U (en) | 2012-08-28 | 2012-08-28 | High-sealability electric plunger fuel pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202718859U true CN202718859U (en) | 2013-02-06 |
Family
ID=47620683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220428672 Expired - Fee Related CN202718859U (en) | 2012-08-28 | 2012-08-28 | High-sealability electric plunger fuel pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202718859U (en) |
-
2012
- 2012-08-28 CN CN 201220428672 patent/CN202718859U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130206 Termination date: 20150828 |
|
| EXPY | Termination of patent right or utility model |